Energy Transfer's Rover and Sunoco's Mariner East 2 pipelines will carry natural gas and gas liquids from Pennsylvania, Ohio and West Virginia — an area that accounts for more than a third of U.S. gas production, Reuters reports.

Spills of drilling fluid, a clay-and-water mixture that lubricates equipment for drilling under rivers and highways;

Sinkholes in backyards;

Improper disposal of hazardous waste and other trash.

The Rover alone accumulated 681 federal violations and fines topped $15 million — a more exact breakdown of the Rover's violations can be found here.

Reuters compared violations accumulated by the Rover and Mariner to four similar projects, and found that those projects averaged 19 violations each during construction.

The pace of both projects have far exceeded industry norms and expenses. Construction of the 713-mile, $4.2 billion Rover started in March 2017, while work on the 350-mile, $2.5 billion Mariner East 2 started in February 2017.

People gathered on the property of the Adorers of the Blood of Christ on Monday to protest construction of a natural gas pipeline. A simple chapel was built on the boundary of where the pipeline is to be constructed. Sean Heisey, York Daily Record

A simple chapel was constructed on the pipeline boundary on the property of the Adorers of the Blood of Christ just outside of Columbia in Lancaster County. Pink ties on the stakes signify the boundary line. Sean Heisey, York Daily Record

Melinda Harnish Clatterbuck, one of the pipeline protest organizers, is taken away in handcuffs on Monday. She was with a group protesting the Atlantic Sunrise natural gas pipeline, which will cut across farmland in Lancaster County owned by an order of Catholic nuns. Sean Heisey, York Daily Record

A police officer escorts one of about two dozen protesters that were arrested at a construction site for the Atlantic Sunrise natural gas pipeline on Monday. About 70 people turned out to show their dissent to the project, which is bringing the pipeline across property owned by the Adorers of the Blood of Christ. The Catholic order of nuns in western Lancaster County has been fighting the pipeline. Sean Heisey, York Daily Record